Validation of methanol-sulfuric acid colorimetry as a stability assay method for quinestrol by comparison with a gas chromatographic procedure.
D002849:Chromatography, Gas; D003124:Colorimetry; D004355:Drug Stability; D004997:Ethinyl Estradiol / Q000032:analysis*; D006861:Hydrogen Peroxide; D000432:Methanol; D008722:Methods; D013464:Sulfuric Acids
D013464:Sulfuric Acids; D004997:Ethinyl Estradiol; D006861:Hydrogen Peroxide; D000432:Methanol